MLA

Map of the States of Missouri and Illinois / Engraved & Printed by Fenner Sears & Co. Published ... by I.T. Hinton & Simpkin & Marshall, 0AD. https://collections.library.yale.edu/catalog/15814642.

APA, 6th edition

Map of the states of Missouri and Illinois / engraved & printed by Fenner Sears & Co. (0 C.E.). [Maps]. Published ... by I.T. Hinton & Simpkin & Marshall, https://collections.library.yale.edu/catalog/15814642.